NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
BIOXI10: CELL CYCLE AND CELL DIVISION
336007
During gamete formation, the enzyme recombinase participates during
1 Metaphase I
2 Anaphase II
3 Prophase I
4 Prophase II
Explanation:
In Prophase I, the enzyme recombinase participates in gamete formation.
AIPMT - 2012
BIOXI10: CELL CYCLE AND CELL DIVISION
336008
The correct sequence of events in prophase I is:
1 Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
2 Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
3 Chiasmata \(\rightarrow\) Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Terminalisation
4 Chiasmata \(\rightarrow\) Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Terminalisation
Explanation:
The correct sequence of prophase-I of meiosis is Leptotene, zygotene, pachytene, diplotene, diakinesis. During prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope. The duplicated homologous chromosomes pair, and crossing-over occurs. Crossing-over is the process that can give rise to genetic recombination. At this point, each homologous chromosome pair is visible as a bivalent, a tight grouping of two chromosomes, each consisting of two sister chromatids. The sites of crossing-over are seen as crisscrossed nonsister chromatids and are called chiasmata. The nucleolus disappears during prophase I. In the cytoplasm, the meiotic spindle, consisting of microtubules and other proteins, forms between the two pairs of centrioles as they migrate to opposite poles of the cell. The nuclear envelope disappears at the end of prophase I, allowing the spindle to enter the nucleus.
KCET - 2021
BIOXI10: CELL CYCLE AND CELL DIVISION
336009
When paternal and maternal chromosomes exchange their genetic material with each other in cell division, this is called
1 Dysjunction
2 Crossing over
3 Synapsis
4 Tetrad formation
Explanation:
Exchange of genetic material between two homologous chromosomes (one from paternal and another from maternal side) leads to crossing over which increases genetic variability.
BIOXI10: CELL CYCLE AND CELL DIVISION
336010
The enzyme involved in the process of crossing over
1 DNA crossinase
2 DNA ligase
3 Recombinase
4 DNA polymerase
Explanation:
Crossing over is the exchange of genetic material between two homologous chromosomes. Crossing over is an enzymemediated process and the enzyme involved is called recombinase.
336007
During gamete formation, the enzyme recombinase participates during
1 Metaphase I
2 Anaphase II
3 Prophase I
4 Prophase II
Explanation:
In Prophase I, the enzyme recombinase participates in gamete formation.
AIPMT - 2012
BIOXI10: CELL CYCLE AND CELL DIVISION
336008
The correct sequence of events in prophase I is:
1 Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
2 Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
3 Chiasmata \(\rightarrow\) Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Terminalisation
4 Chiasmata \(\rightarrow\) Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Terminalisation
Explanation:
The correct sequence of prophase-I of meiosis is Leptotene, zygotene, pachytene, diplotene, diakinesis. During prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope. The duplicated homologous chromosomes pair, and crossing-over occurs. Crossing-over is the process that can give rise to genetic recombination. At this point, each homologous chromosome pair is visible as a bivalent, a tight grouping of two chromosomes, each consisting of two sister chromatids. The sites of crossing-over are seen as crisscrossed nonsister chromatids and are called chiasmata. The nucleolus disappears during prophase I. In the cytoplasm, the meiotic spindle, consisting of microtubules and other proteins, forms between the two pairs of centrioles as they migrate to opposite poles of the cell. The nuclear envelope disappears at the end of prophase I, allowing the spindle to enter the nucleus.
KCET - 2021
BIOXI10: CELL CYCLE AND CELL DIVISION
336009
When paternal and maternal chromosomes exchange their genetic material with each other in cell division, this is called
1 Dysjunction
2 Crossing over
3 Synapsis
4 Tetrad formation
Explanation:
Exchange of genetic material between two homologous chromosomes (one from paternal and another from maternal side) leads to crossing over which increases genetic variability.
BIOXI10: CELL CYCLE AND CELL DIVISION
336010
The enzyme involved in the process of crossing over
1 DNA crossinase
2 DNA ligase
3 Recombinase
4 DNA polymerase
Explanation:
Crossing over is the exchange of genetic material between two homologous chromosomes. Crossing over is an enzymemediated process and the enzyme involved is called recombinase.
336007
During gamete formation, the enzyme recombinase participates during
1 Metaphase I
2 Anaphase II
3 Prophase I
4 Prophase II
Explanation:
In Prophase I, the enzyme recombinase participates in gamete formation.
AIPMT - 2012
BIOXI10: CELL CYCLE AND CELL DIVISION
336008
The correct sequence of events in prophase I is:
1 Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
2 Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
3 Chiasmata \(\rightarrow\) Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Terminalisation
4 Chiasmata \(\rightarrow\) Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Terminalisation
Explanation:
The correct sequence of prophase-I of meiosis is Leptotene, zygotene, pachytene, diplotene, diakinesis. During prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope. The duplicated homologous chromosomes pair, and crossing-over occurs. Crossing-over is the process that can give rise to genetic recombination. At this point, each homologous chromosome pair is visible as a bivalent, a tight grouping of two chromosomes, each consisting of two sister chromatids. The sites of crossing-over are seen as crisscrossed nonsister chromatids and are called chiasmata. The nucleolus disappears during prophase I. In the cytoplasm, the meiotic spindle, consisting of microtubules and other proteins, forms between the two pairs of centrioles as they migrate to opposite poles of the cell. The nuclear envelope disappears at the end of prophase I, allowing the spindle to enter the nucleus.
KCET - 2021
BIOXI10: CELL CYCLE AND CELL DIVISION
336009
When paternal and maternal chromosomes exchange their genetic material with each other in cell division, this is called
1 Dysjunction
2 Crossing over
3 Synapsis
4 Tetrad formation
Explanation:
Exchange of genetic material between two homologous chromosomes (one from paternal and another from maternal side) leads to crossing over which increases genetic variability.
BIOXI10: CELL CYCLE AND CELL DIVISION
336010
The enzyme involved in the process of crossing over
1 DNA crossinase
2 DNA ligase
3 Recombinase
4 DNA polymerase
Explanation:
Crossing over is the exchange of genetic material between two homologous chromosomes. Crossing over is an enzymemediated process and the enzyme involved is called recombinase.
336007
During gamete formation, the enzyme recombinase participates during
1 Metaphase I
2 Anaphase II
3 Prophase I
4 Prophase II
Explanation:
In Prophase I, the enzyme recombinase participates in gamete formation.
AIPMT - 2012
BIOXI10: CELL CYCLE AND CELL DIVISION
336008
The correct sequence of events in prophase I is:
1 Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
2 Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Chiasmata \(\rightarrow\) Terminalisation
3 Chiasmata \(\rightarrow\) Synapsis \(\rightarrow\) Crossing over \(\rightarrow\) Terminalisation
4 Chiasmata \(\rightarrow\) Crossing over \(\rightarrow\) Synapsis \(\rightarrow\) Terminalisation
Explanation:
The correct sequence of prophase-I of meiosis is Leptotene, zygotene, pachytene, diplotene, diakinesis. During prophase I, the chromosomes have already duplicated. During prophase I, they coil and become shorter and thicker and visible under the light microscope. The duplicated homologous chromosomes pair, and crossing-over occurs. Crossing-over is the process that can give rise to genetic recombination. At this point, each homologous chromosome pair is visible as a bivalent, a tight grouping of two chromosomes, each consisting of two sister chromatids. The sites of crossing-over are seen as crisscrossed nonsister chromatids and are called chiasmata. The nucleolus disappears during prophase I. In the cytoplasm, the meiotic spindle, consisting of microtubules and other proteins, forms between the two pairs of centrioles as they migrate to opposite poles of the cell. The nuclear envelope disappears at the end of prophase I, allowing the spindle to enter the nucleus.
KCET - 2021
BIOXI10: CELL CYCLE AND CELL DIVISION
336009
When paternal and maternal chromosomes exchange their genetic material with each other in cell division, this is called
1 Dysjunction
2 Crossing over
3 Synapsis
4 Tetrad formation
Explanation:
Exchange of genetic material between two homologous chromosomes (one from paternal and another from maternal side) leads to crossing over which increases genetic variability.
BIOXI10: CELL CYCLE AND CELL DIVISION
336010
The enzyme involved in the process of crossing over
1 DNA crossinase
2 DNA ligase
3 Recombinase
4 DNA polymerase
Explanation:
Crossing over is the exchange of genetic material between two homologous chromosomes. Crossing over is an enzymemediated process and the enzyme involved is called recombinase.
